Home / 12,779.10-19,167.30-4,013.55

Finding the Fourth Proportional to 12,779.10, 19,167.30 and 4,013.55

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Solution

The fourth proportional to 12,779.10, 19,167.30 and 4,013.55 is: 6,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,779.10 : 19,167.30 = 4,013.55 : x
  2. Step 2: Convert to fraction form
    12,779.10/19,167.30 = 4,013.55/x
  3. Step 3: Cross multiply
    12,779.10x = 19,167.30 × 4,013.55
  4. Step 4: Simplify right side
    12,779.10x = 76,928,916.92
  5. Step 5: Solve for x
    x = 76,928,916.92/12,779.10
  6. Step 6: Final answer
    x = 6,019.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.